A pair of amethyst and diamond earrings

A pair of amethyst and diamond earrings, rubover-set with an emerald-cut amethyst and quartered with rows of round brilliant-cut diamonds pave-set in yellow gold, with fluted gold decoration to the corners, with post and clip fittings, each stamped 18k and with maker's mark RdeV for Royal de Versailles, 1.9cm high